[webapi] Add spec.json for some suits
[embeddingapi] Merge webapi-embeddingapi-xwalk-tests to embedding-api-android-tests

- Merge webapi-embeddingapi-xwalk-tests to embedding-api-android-tests
- Remove embeddingapi folder
- Remove pack.sh, webapi-embeddingapi-xwalk-tests.spec, inst.sh.apk, tests.xml
- Improve README content

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 128, fail 15, block 0
[master][wrt] Update 4 manu Tcs to  auto Tcs

[Detailed commit message (if have)]
Unit test platform: [Tizen]
Impacted TCs num(approved):New 4,Update 0,Delete 0
Test Result: pass 4, fail 0, block 0
Merge pull request #1441 from zhuyongyong/embeddingapi-tests/merge

[embeddingapi] Merge webapi-embeddingapi-xwalk-tests to embedding-api-android-tests
Correct the value of 'component' attribute in these 9 packages tests*.xml
Merge pull request #1388 from jiajiax/jiajiax/correct_component

Correct the value of 'component' attribute in these 9 suites' tests*.xml files
Merge pull request #1427 from zhuyongyong/webapi-nfc/addSpecJson

[webapi] Add spec.json for some suites
Merge pull request #1455 from linshen/shenlin/add-5-tcs-for-wrt-packagemgt

[master][wrt] Update 4 manu Tcs to  auto Tcs
[webapi][XWALK-3118] Delete the excess character '\'

Remove the invalid charcter '\' from test code.
Impacted tests(approved):new 0,update 1,delete 0
Unit test platform:[android]
Unit test result summary:pass 1,fail 0,block 0
Merge pull request #1457 from chenxix/webapi/modify-color

[webapi][XWALK-3118] Delete the excess character '\'
[master][usecase][XWALK-1501] Delete URL TCs

Unit test platform: [Tizen]
Impacted TCs num(approved):New 0,Update 1,Delete 1
Test Result: pass 1, fail 0, block 0
Merge pull request #1461 from linshen/shenlin-master-ivi-remove-usecase

[master][usecase][XWALK-1501] Delete URL TCs
[stability] Update ont case

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
Merge pull request #1465 from wanghongjuan/stability/overload

[stability] Update ont case